content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * -----------------------
   * StrokeChooserPanel.java
   * -----------------------
   * (C) Copyright 2000-2012, by Object Refinery Limited.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   Dirk Zeitz;
   *
   * Changes (from 26-Oct-2001)
   * --------------------------
   * 26-Oct-2001 : Changed package to com.jrefinery.ui.*;
   * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG);
   * 16-Mar-2004 : Fix for focus problems (DZ);
   * 27-Feb-2009 : Fixed bug 2612649, NullPointerException (DG);
   * 17-Jun-2012 : Moved from JCommon to JFreeChart (DG);
   *
   */
  
  package org.jfree.chart.ui;
  
  import java.awt.BorderLayout;
  import java.awt.Stroke;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  
  import javax.swing.DefaultComboBoxModel;
  import javax.swing.JComboBox;
  import javax.swing.JPanel;
  
  /**
   * A component for choosing a stroke from a list of available strokes.  This
   * class needs work.
   */
  public class StrokeChooserPanel extends JPanel {
  
      /** A combo for selecting the stroke. */
      private JComboBox selector;
  
      /**
       * Creates a panel containing a combo-box that allows the user to select
       * one stroke from a list of available strokes.
       *
       * @param current  the current stroke sample.
       * @param available  an array of 'available' stroke samples.
       */
      public StrokeChooserPanel(StrokeSample current, StrokeSample[] available) {
          setLayout(new BorderLayout());
          // we've changed the behaviour here to populate the combo box
          // with Stroke objects directly - ideally we'd change the signature
          // of the constructor too...maybe later.
          DefaultComboBoxModel model = new DefaultComboBoxModel();
          for (StrokeSample anAvailable : available) {
              model.addElement(anAvailable.getStroke());
          }
          this.selector = new JComboBox(model);
          this.selector.setSelectedItem(current.getStroke());
          this.selector.setRenderer(new StrokeSample(null));
          add(this.selector);
          // Changes due to focus problems!! DZ
          this.selector.addActionListener(new ActionListener() {
              @Override
              public void actionPerformed(final ActionEvent evt) {
                  getSelector().transferFocus();
              }
          });
      }
  
  
      /**
       * Returns the selector component.
       *
       * @return Returns the selector.
       */
      protected final JComboBox getSelector() {
          return this.selector;
      }
  
      /**
       * Returns the selected stroke.
       *
       * @return The selected stroke (possibly <code>null</code>).
       */
      public Stroke getSelectedStroke() {
          return (Stroke) this.selector.getSelectedItem();
      }
  
  }
  